K${}^{-}$ multi-nucleon absorption cross sections and branching ratios in $\Lambda$p and ${\Sigma }^0$p final states

Abstract

The determination of low-energy cross sections and branching ratios of the K${}^{-}$ multi-nucleon absorption processes in $\Lambda$p and ${\Sigma }^0$p final states performed by the AMADEUS collaboration is presented. Low momentum K${}^{-}$ ($p_{\mathrm{K}}\simeq$ 127 MeV/c) produced at the DA$\Phi$NE collider are impinged on a Carbon target within the KLOE detector and the two and three nucleon absorption processes are disentangled by comparing the experimental data to phenomenological calculations. The $\Lambda$p spectra are interpreted in terms of K${}^{-}$ multi-nucleon absorption processes; the possible contribution of a K${}^{-}$pp bound state is demonstrated to overlap with the two nucleon capture process, its absolute yield thus resulting indistinguishable.

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Cited by in corpus (9)

• Strangeness in Nuclei and Neutron Stars
• Observation of a $\bar{K}NN$ bound state in the ${}^3\mathrm{He}(K^{-},\Lambda p)n$ reaction
• Hadron Physics at J-PARC
• Single- and two-nucleon antikaon absorption in nuclear matter with chiral meson-baryon interactions
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• First application of a microscopic $K^{-}NN$ absorption model in calculations of kaonic atoms
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• Recent results and future prospects of kaonic nuclei at J-PARC